Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effects of Puerariae Flos on Antioxidative Activities and Lipid Levels in Hyperlipidemic Sprague-Dawley Rats

갈화(Puerariae Flos) 추출물이 고지혈 유발 흰쥐의 항산화활성 및 지질농도에 미치는 영향

  • Park, Gun-Jin (Division of Food Biotechnology, School of Biotechnology, Kangwon University) ;
  • Lee, Hyung-Woo (Dept. of Tourism & Food Service Consulting, Hallym College) ;
  • Park, Byong-Ryol (Dept. of Tourism & Food Service Consulting, Hallym College) ;
  • Park, Sung-Jin (Dept. of Tourism Food Service Cuisine, Hallym College) ;
  • Kim, Jong-Dai (Division of Food Biotechnology, School of Biotechnology, Kangwon University)
  • 박건진 (강원대학교 BT특성화학부 식품생명공학) ;
  • 이형우 (한림성심대학 관광.외식컨설팅과) ;
  • 박병렬 (한림성심대학 관광.외식컨설팅과) ;
  • 박성진 (한림성심대학 관광외식조리과) ;
  • 김종대 (강원대학교 BT특성화학부 식품생명공학)
  • Published : 2009.07.31
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Abstract

This study was carried out to investigate the effects of Puerariae Flos extracts on antioxidative potential, free radical generation and the lipid levels in rats. Sprague-Dawley rats were divided into 2 diet groups: AIN-76 diet (control group) and modified AIN-76 diet (cholesterol 0.5%) with 0.5% Puerariae Flos extracts for 4 weeks. Body weight and feed efficiency ratios from both groups were not significantly different. Antioxidative potentials significantly increased in the group fed Puerariae Flos extracts compared to control group (p<0.05). However, there was no difference in free radical generation. The weight of organs, such as heart, kidney, liver, and spleen, in rats were not different in both groups. The ratio HDL cholesterol to total cholesterol in the Puerariae Flos group was significantly higher than in the control group, while the other serum lipid parameters (total cholesterol, HDL cholesterol, triglyceride, and phospholipids) were not different between the two groups. These results imply that supplementation of Puerariae Flos extracts may beneficially contribute to improve antioxidant potential and to decrease the lipid levels in the blood.

갈화 추출물을 농축하여 동결 건조해서 실험동물인 SD계 수컷 흰쥐의 실험식이에 0.5% 수준으로 첨가하여 4주간 사육하면서 체중은 7일 간격으로 섭취는 2일 간격으로 오전9시에 측정하였으며, 활성산소 및 항산화활성 측정은 2주간격으로 측정하였다. 또한 실험이 종료된 후 실험동물을 단두 도살하여 혈청 중 총콜레스테롤, HDL-콜레스테롤, 중성지방, 혈당, 인지질을 측정하여 지질 함량에 미치는 영향을 측정하였다. 갈화 추출물을 SD계 수컷 흰쥐에 갈화 추출물이 함유된 식이를 급여 후 식이섭취량, 체중증가량을 측정한 결과 갈화 추출물을 섭취한 rat이 대조군에 비해 모두 증가하였지만 군간 유의적 차이를 보이지 않았다. 갈화 추출물 급여 후 적출된 실험동물의 장기에서 대조군과 실험군의 무게 차이는 보이지 않았다. 사육 기간 동안 2주 간격으로 측정한 혈액 중 항산화와 활성산소에서는, 항산화에서는 4주째 갈화가 대조군에 비해 유의적으로 수치가 높게 나왔으며, 활성산소는 유의적인 차이를 보이지 않았다. 실험식이 종료 후 실험동물에서 적출한 장기의 무게를 측정한 결과 심장, 신장, 장, 간 모두 차이를 보이지 않았다. 또한, 혈청중의 총콜레스테롤 함량 측정 결과 갈화 추출물 급여군이 대조군에 비해 낮은 함량을 나타내었고, HDL-콜레스테롤 함량에서는 대조군에 비해 높은 함량을 나타내었지만 유의적으로 증가하지는 않았다. HDL-cholesterol/total cholesterol의 비율에서도 갈화 추출물 급여군이 유의적으로 증가하였다. LDL-cholesterol 함량은 갈화 추출물 급여군이 대조군에 비해 낮은 함량을 나타내었으나 유의적인 차이는 아니었다. 중성지방 함량은 갈화 추출물 급여군이 대조군에 비해 낮은 수치를 보였으며, 혈당 함량과 인지질 함량은 대조군에 비해 높은 수치였으나 유의적인 차이가 없었다. 이상에서와 같이 갈화 추출물 급여한 흰쥐를 이용한 동물실험에서 항산화능 및 혈청의 지질대사 개선 효과를 확인할 수 있었다. 이는 천연물의 조추출물을 이용한 기반연구로서 향후 갈화의 항산화 효과와 지질개선에 대한 분자생물학적 조직병리학적 후속연구가 필요하다고 사료되며, 이 연구의 결과를 바탕으로 갈화의 항산화식품이나 지질 개선 기능성식품 소재로의 활용이 기대된다.

Keywords

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